Process for flexibly manufacturing wetsuit or garment by integrally forming a functional surface layer on a rubber foam substrate

A process for flexibly manufacturing a wetsuit, the process comprising:

• preparing a functional surface layer;
• preparing a rubber foam substrate sheet;
• integrally forming said functional surface layer to said rubber foam substrate sheet to obtain a composite sheet;
• and
• vulcanizing and foaming said composite sheet to produce a rubber foam composite product adapted for making the wetsuit;
• said functional surface layer being pre-formed as a functional foam surface-layer sheet member as extruded through a plurality of rollers and said functional surface-layer sheet member being made of a functional surface layer material which comprises at least a functional ingredient added into a formula for making the functional surface layer.